Flooring and process for its manufacture
CA 2220522 C · Owner: Carl Freudenberg · Inventors: Nahe, Torsten; Heckel, Klaus; Butscher, Alfons
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flooring is disclosed which has discrete surface areas which differ in the characteristics of at least one of their optical and/or physical properties. A process for the manufacture of such a flooring is also disclosed. The sequence of the changes can be arranged such that, for example different colour shades can be, used for the directing of visitors in shopping malls hospitals, airports and public, buildings. The flooring provides an aesthetically pleasing as well as functional appearance.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 28, 1997 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.